CN117061011A - Optical module with roof adjusting function and data transmission system - Google Patents
Optical module with roof adjusting function and data transmission system Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 description 18
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/548—Phase or frequency modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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Abstract
The application provides an optical module with a roof adjusting function and a data transmission system. The optical module includes: processing unit, transmitting unit and receiving unit. The processing unit is used for generating a first top adjustment signal, the transmitting unit is used for transmitting the first top adjustment signal and the first main service signal to the next optical module, and the receiving unit is used for receiving a second main service signal from the last optical module and a second top adjustment signal generated by the last optical module. The transmitting unit comprises a loading circuit, and the receiving unit comprises a sampling amplifying circuit. The output end of the processing unit is connected with the input end of the loading circuit, and the input end of the processing unit is connected with the output end of the sampling amplifying circuit; the loading circuit is used for loading the first top adjustment signal into the main service signal, so that the first top adjustment signal is transmitted along with the first main service signal; the sampling amplifying circuit is used for extracting the second top-adjusting signal, filtering and amplifying the second top-adjusting signal and transmitting the second top-adjusting signal to the processing unit. The optical module is convenient for realizing the supervision of the remote module.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to an optical module and a data transmission system with a roof adjusting function.
Background
Along with continuous promotion and increasingly abundant application prospects of 5G construction, in order to cope with challenges of network deployment, operation and maintenance in a 5G network, each operator continuously explores novel 5G forward-transmission and medium-return optical module technical researches to meet requirements of 5G network deployment and cost reduction in consideration of the fact that an optical module of 4G base station equipment cannot meet transmission requirements corresponding to 5G.
At present, with more and more deployment of the medium backhaul network, the problem of supervision of the remote module is gradually highlighted. In the prior art, a monitoring unit is usually configured on the remote module, and the state of the remote module is monitored and information is transmitted through the monitoring unit.
However, the monitoring unit is configured at the remote module, so that maintenance and management are inconvenient, the power consumption of the remote module is increased, and the cost is increased.
Disclosure of Invention
The application provides an optical module with a roof adjusting function and a data transmission system, which are used for solving the problem of inconvenient supervision of a remote module.
In a first aspect, the present application provides an optical module with a roof-adjusting function, including: the device comprises a processing unit, a transmitting unit and a receiving unit;
the processing unit is used for generating a first top adjustment signal, the transmitting unit is used for transmitting the first top adjustment signal and the first main service signal to the next optical module, and the receiving unit is used for receiving a second main service signal from the last optical module and a second top adjustment signal generated by the last optical module;
the transmitting unit comprises a loading circuit, and the receiving unit comprises a sampling amplifying circuit;
the output end of the processing unit is connected with the input end of the loading circuit, and the input end of the processing unit is connected with the output end of the sampling amplifying circuit;
the loading circuit is used for loading the first top adjustment signal into the main service signal, so that the first top adjustment signal is transmitted along with the first main service signal;
the sampling amplifying circuit is used for extracting the second top-adjusting signal, filtering and amplifying the second top-adjusting signal to obtain a third top-adjusting signal, and transmitting the third top-adjusting signal to the processing unit.
Optionally, the transmitting unit further comprises: a laser driving chip and a laser array;
the output end of the laser driving chip is connected with the input end of the laser array, and the output end of the loading circuit is connected with the input end of the laser array;
the laser driving chip is used for transmitting the first main service signal and driving the laser array;
the laser array is used for converting the first main service signal and the first top modulation signal from an electric signal to an optical signal.
Optionally, the laser driving chip adopts a plurality of data transmission channels to transmit the main service signal;
the loading circuit is used for loading the first roof-adjusting signal into the main service signal, and comprises the following components:
the loading circuit is used for loading the first topping signal into a main service signal transmitted by one of a plurality of data transmission channels.
Optionally, the transmitting unit further comprises a wavelength division multiplexer, and the receiving unit further comprises a wavelength division demultiplexer;
the input end of the wavelength division multiplexer is connected with the output end of the laser array, and the output end of the wavelength division multiplexer is connected with the optical fiber interface;
the input end of the wave-division multiplexer is connected with the optical fiber interface;
the wavelength division multiplexer is used for converting a plurality of main service signals in a plurality of data transmission channels into a main service signal;
the wave-division multiplexer is used for dividing one main service signal into a plurality of main service signals, so that the plurality of main service signals are transmitted through a plurality of data transmission channels, and one main service signal in the plurality of main service signals comprises a second roof-adjusting signal.
Optionally, the amplitude of the first topping signal or the second topping signal is 3-5% of the main service signal.
Optionally, the frequency of the first top signal or the second top signal is 1KHz-1MHz.
Optionally, the processing unit comprises: a signal generation module and an encoding module;
the output end of the signal generating module is connected with the input end of the coding module, and the output end of the coding module is connected with the input end of the loading circuit;
the signal generation module is used for generating a first roof-adjusting signal;
the encoding module is used for encoding the first modulated top signal.
Optionally, the processing unit further comprises: a signal recovery module and a decoding module;
the input end of the signal recovery module is connected with the output end of the sampling amplifying circuit, and the output end of the signal recovery module is connected with the input end of the decoding module;
the signal recovery module is used for recovering and regenerating the third top adjustment signal to obtain a fourth top adjustment signal;
the decoding module is used for decoding the fourth top modulation signal to obtain a second top modulation signal.
Optionally, the processing unit further comprises: a data processing module;
the input end of the data processing module is connected with the output end of the decoding module, and the output end of the data processing module is connected with the input end of the encoding module.
In a second aspect, the present application provides a data transmission system, including at least two optical modules with a roof-adjusting function in any embodiment of the first aspect and the second aspect.
According to the optical module and the data transmission system with the roof adjusting function, the loading circuit and the sampling amplifying circuit are arranged for the optical module, so that the roof adjusting signal generated by the optical module can be synchronously transmitted along with the main service signal without affecting the main service signal, and the effect of monitoring the remote module without configuring a monitoring unit is achieved.
Drawings
In order to more clearly illustrate the application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an application scenario of an optical module according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an optical module according to an embodiment of the present application;
FIG. 3 is a schematic diagram of another optical module according to an embodiment of the application;
fig. 4 is a schematic structural diagram of another optical module according to an embodiment of the present application;
fig. 5 is a schematic diagram of a top signal according to an embodiment of the present application.
Reference numerals:
10. a processing unit; 11. a signal generation module; 12. a coding module; 13. a signal recovery module; 14. a decoding module; 15. a data processing module;
20. a transmitting unit; 21. a loading circuit; 22. a laser driving chip; 23. an array of lasers; 24. a wavelength division multiplexer;
30. a receiving unit; 31. a sampling amplifying circuit; 32. a wave-division multiplexer; 33. a PIN array; 34. TIA chip;
40. and an optical fiber interface.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second, third, fourth and the like in the description and in the claims and in the above drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein.
Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise.
It will be further understood that the terms "comprises," "comprising," "includes," and/or "including" specify the presence of stated features, steps, operations, elements, components, items, categories, and/or groups, but do not preclude the presence, presence or addition of one or more other features, steps, operations, elements, components, items, categories, and/or groups.
Along with the continuous promotion and increasingly abundant application prospects of 5G construction, in order to cope with challenges of network deployment, operation and maintenance in a 5G network, each operator continuously explores novel 5G forward-transmission and medium-return optical module technical research to meet requirements of 5G network deployment and cost reduction in consideration of the fact that a 6Gbps/10Gbps optical module of 4G base station equipment cannot meet the transmission requirements corresponding to 5G.
The speed of the 5G front optical transmission module is mainly concentrated on the 25Gbps optical module, and the medium transmission and back transmission network mainly adopts the 50Gbps optical module and the 100Gbps optical module. With the increase of data volume, the 100Gbps optical module is increasingly applied to mid-transmission, and the supervision problem of the 100Gbps far-end module is more and more prominent. It is common in the art to configure corresponding functional units on the remote module to support control and monitoring of the remote module. For example, the 100g QSFP28 LR4 optical module has advantages of low power consumption, high port density, low cost, etc., but does not support transmission of supervision information, and to realize control of the remote module, a corresponding control unit needs to be configured in the remote module.
The existing method for monitoring the remote module is high in cost, increases equipment power consumption and is inconvenient to maintain and manage.
Aiming at the problems, the application provides an optical module with a specific roof-adjusting function and a data transmission system. The application is based on the existing optical module, an external circuit is configured, and the top adjusting signal generated by the far-end optical module is loaded to the main service signal in a low-frequency perturbation mode through the external circuit, so that the top adjusting signal and the main service signal are synchronously transmitted to the local network management system, thereby realizing the operation, management and maintenance of the far-end optical module by the local network management system, and achieving the purposes of rapidly positioning network faults, improving network operation and maintenance efficiency and saving operation and maintenance cost.
Fig. 1 shows an application scenario schematic diagram of an optical module according to an embodiment of the present application. As shown in fig. 1, after the remote module optical module 1 receives the main service signal, the main service signal is converted from an electrical signal to an optical signal, the optical signal is transmitted to the optical module 2 by an optical fiber, the optical module 2 converts the received optical signal to an electrical signal, and the local network management system can receive the electrical signal, that is, the main service signal.
The technical scheme of the application is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
Fig. 2 is a schematic structural diagram of an optical module according to an embodiment of the application. As shown in fig. 2, the optical module of the present embodiment may include a processing unit 10, a transmitting unit 20, and a receiving unit 30.
Wherein the processing unit 10 is configured to generate a first topping signal. The topping signal is network monitoring management information generated by the optical module, for example, state parameters such as optical power, supply voltage and the like of the optical module.
The transmitting unit 20 is configured to transmit the first topping signal and the first main service signal to the next optical module.
In this embodiment, the transmitting unit 20 includes a loading circuit 21, and an output terminal of the processing unit 10 is connected to an input terminal of the loading circuit 21.
The transmitting unit 20 may load the first topping signal into the first main service signal through the loading circuit 21, so that the first topping signal can be transmitted to the next optical module in synchronization with the first main service signal. In this process, the emission unit 20 may be the emission unit 20 of the optical module 1 of fig. 1.
In this embodiment, the receiving unit 30 includes a sampling amplifying circuit 31, and an input end of the processing unit 10 is connected to an output end of the sampling amplifying circuit 31.
The receiving unit 30 may receive the second main service signal and the second top adjustment signal generated by the previous optical module through the sampling and amplifying circuit 31, where the sampling and amplifying circuit 31 extracts the second top adjustment signal and filters and amplifies the second top adjustment signal to obtain a third top adjustment signal, and transmits the third top adjustment signal to the processing unit 10.
In this embodiment, the transmitting unit 20 and the receiving unit 30 are described in the same optical module, so that the first modulated top signal is distinguished from the second modulated top signal. The receiving unit 30 may be the receiving unit 30 of the optical module 2 in fig. 1.
Optionally, the amplitude of the first topping signal or the second topping signal is 3-5% of the main service signal.
Optionally, the frequency of the first top signal or the second top signal is 1KHz-1MHz.
The small-amplitude and low-frequency top-adjusting signal enables the transmitting unit 20 to load the top-adjusting signal into the main service signal in a low-frequency perturbation mode, so that disturbance of the top-adjusting signal to the main service signal is reduced, and the main service signal can be normally transmitted.
According to the optical module with the top adjusting function, the loading circuit 21 is arranged on the transmitting unit 20, so that the top adjusting signal can be loaded into the main service signal in a low-frequency perturbation mode and is synchronously transmitted with the main service signal, the amplifying circuit is arranged on the receiving unit 30, the optical module can receive the top adjusting signal and filter and amplify the top adjusting signal, and the transmission of the top adjusting signal is completed, so that the effect of monitoring the remote module in the local network management system is achieved, a monitoring unit is not required to be configured for the remote module, and the monitoring and later maintenance are convenient.
Fig. 3 is a schematic structural diagram of another optical module according to an embodiment of the application. As shown in fig. 3, the transmitting unit 20 may further include: a laser driver chip 22 and a laser array 23.
The output end of the laser driving chip 22 is connected with the input end of the laser array 23, and the output end of the loading circuit 21 is connected with the input end of the laser array 23.
The laser driving chip 22 is used for transmitting the first main service signal and driving the laser array 23.
The laser array 23 is used for converting the first main service signal and the first peak modulation signal from an electrical signal to an optical signal.
The laser driving chip 22 processes the main service electrical signal and drives the laser array 23 to convert the main service electrical signal into an optical signal. The loading circuit 21 processes the modulated electrical signal and loads the modulated electrical signal into the main service electrical signal, and the modulated electrical signal is converted into an optical signal through the laser array 23 in synchronization with the main service electrical signal.
With continued reference to fig. 3, the laser driver chip 22 may employ multiple data transmission channels to transmit the main traffic signal.
The loading circuit 21 may load the first topping signal into the main service signal transmitted by one of the plurality of data transmission channels. The data transmission channel loaded with the first roof-adjusting signal can be used as an optical module information monitoring management channel.
For example, a 100Gbps optical module may include four 25Gbps data transmission channels, each having a specific wavelength and independent receiving functionality. The four data transmission channels transmit the main service signal together. The loading circuit 21 loads the modulated top signal onto the main service signal in one of the data transmission channels, and transmits the modulated top signal in synchronization with the main service signal.
In this example, a small-amplitude and low-frequency modulation signal is superimposed on the optical module information monitoring management channel, and the sampling amplification circuit 31 of the receiving unit 30 amplifies the low-frequency modulation signal to realize transmission of the modulated top signal, that is, transmission of the monitoring management information, and transmission of the main service signal is not affected.
With continued reference to fig. 3, the transmitting unit 20 further includes a wavelength division multiplexer 24 and the receiving unit 30 further includes a wavelength division demultiplexer.
The input end of the wavelength division multiplexer 24 is connected with the output end of the laser array 23, the output end of the wavelength division multiplexer 24 is connected with the optical fiber interface 40, and the first main service signal and the first top adjustment signal are transmitted to the next optical module through the optical fiber interface 40 by optical fibers.
The input end of the wavelength division demultiplexer is connected with the optical fiber interface 40, and receives the second main service signal and the second top adjustment signal sent by the last optical module through the optical fiber interface 40.
In this embodiment, when the laser driving chip 22 adopts a plurality of data transmission channels to transmit the first main service signal, the loading circuit 21 loads the first modulated signal onto the main service signal in one of the data transmission channels, and at this time, the wavelength division multiplexer 24 can convert a plurality of main service signals in the plurality of data transmission channels into the first main service signal.
Similarly, the wavelength division demultiplexer may decompose the second main service signal into a plurality of main service signals when the second main service signal is received, where the plurality of main service signals are transmitted through a plurality of data transmission channels, and one of the plurality of main service signals includes the second roof-adjusting signal.
With continued reference to fig. 3, the receiving unit 30 may further include a P-type semiconductor-impurity-N-type semiconductor (PIN) photodiode array 33 and a transimpedance amplification (TIA) chip 34.
The output end of the wave-division multiplexer is connected with the input end of the PIN array 33, the output end of the PIN array 33 is connected with the input end of the TIA chip 34, and the output end of the PIN array 33 is also connected with the input end of the sampling amplifying circuit 31.
The PIN array 33 may convert parallel optical signals in a plurality of data transmission channels into parallel electrical signals. The sampling and amplifying circuit 31 may extract the second modulated top signal from the second main service signal, and filter and amplify the second modulated top signal. The TIA chip 34 is configured to amplify the second main service signal.
According to the optical module with the top adjustment function, the top adjustment signal is transmitted through the information monitoring management channel, so that the remote monitoring of the remote module by the local network management system is realized, the occupation of wavelength resources of service signals is reduced, and the operation and maintenance cost is saved.
Fig. 4 is a schematic structural diagram of another optical module according to an embodiment of the present application. As shown in fig. 4, the processing unit 10 may include: a signal generation module 11 and an encoding module 12;
the output end of the signal generating module 11 is connected with the input end of the encoding module 12, and the output end of the encoding module 12 is connected with the input end of the loading circuit 21;
the signal generating module 11 is configured to generate a first roof-adjusting signal;
the encoding module 12 is configured to encode the first modulated top signal.
Fig. 5 is a schematic diagram of a top signal according to an embodiment of the present application. As shown in fig. 5, the encoded top-modulated signal is a digital signal, and is converted into an analog square-wave voltage signal with adjustable amplitude by the processing unit 10, the loading circuit 21 converts the analog square-wave voltage signal output by the processing unit 10 into an analog square-wave current signal, and the analog square-wave current signal and the main service signal are superimposed and transmitted together, and are converted into a top-modulated light signal by the laser array 23. The receiving unit 30 of the optical module receives the top-adjusting signal in the analog signal state, filters and amplifies the top-adjusting signal and transmits the top-adjusting signal to the processing unit 10, and the processing unit 10 can convert the top-adjusting signal into a digital signal so as to realize the transmission of the top-adjusting signal.
With continued reference to fig. 4, the processing unit 10 may further include: the signal recovery module 13 and the decoding module 14.
The input end of the signal recovery module 13 is connected with the output end of the sampling amplifying circuit 31, and the output end of the signal recovery module 13 is connected with the input end of the decoding module 14.
The signal recovery module 13 is configured to recover and regenerate the third modulated top signal to obtain a fourth modulated top signal.
The third top signal is an analog signal, the fourth top signal is a digital signal, and the recovering and regenerating means that the top signal is converted from the analog signal to the digital signal.
The decoding module 14 is configured to decode the fourth modulated top signal to obtain a second modulated top signal.
As mentioned above, the optical module generates the top signal and then encodes the top signal, and vice versa, the last optical module generates the second top signal and then encodes the top signal again and then transmits the top signal, and the current optical module receives the fourth top signal and then decodes the top signal to obtain the second top signal.
With continued reference to fig. 4, the processing unit 10 may further include: a data processing module 15;
an input end of the data processing module 15 is connected with an output end of the decoding module 14, and an output end of the data processing module 15 is connected with an input end of the encoding module 12.
The data processing module 15 is used for controlling the processes of generating the modulated top signal by the signal generating module 11, encoding the modulated top signal by the encoding module 12, loading the modulated top signal into the main service signal by the loading circuit 21, transmitting the modulated top signal in synchronization with the main service signal, extracting the modulated top signal from the main service signal by the sampling amplifying circuit 31, filtering and amplifying the modulated top signal, recovering and regenerating the modulated top signal by the signal recovering module 13, and decoding the modulated top signal by the decoding module 14, which is the control center of the optical module. In addition, the local network management system can also realize the control functions of turning off the optical power, resetting and the like of the optical module through the data processing module 15.
The data processing module 15 may further store the second crest factor adjustment signal decoded by the decoding module 14 in a device register in the local network management system, so as to facilitate the query of the local network management system.
The data processing module 15 may collect information such as status parameters of the optical module before the signal generating module 11 generates the top adjustment signal, so as to improve efficiency of generating the top adjustment signal by the optical module.
The optical module with the top adjustment function provided by the embodiment completes the processing such as the generation of the top adjustment signal and the recovery and regeneration after the receiving through the processing unit 10, and can realize the lightweight management and control of the local network management system to the remote optical module without configuring additional monitoring equipment, thereby being beneficial to the rapid positioning of network faults, having low cost and convenient operation and maintenance, improving the network operation and maintenance efficiency and saving the operation and maintenance cost.
The application also provides a data transmission system, which comprises at least two optical modules with the roof adjusting function.
As shown in fig. 1, when transmitting a main service signal, the optical module 1 loads a top adjustment signal into the main service signal, so that the top adjustment signal and the main service signal are transmitted synchronously. The optical module 1 converts the top adjusting signal and the main service signal from electric signals to optical signals, the optical signals are transmitted to the optical module 2 through optical fibers, and the optical module 2 converts the top adjusting signal and the main service signal from optical signals to electric signals, so that the monitoring management of the remote module optical module 1 by the local network management system is realized. The data transmission system in this embodiment includes at least an optical module 1 and an optical module 2.
The implementation manner and technical effects of the data transmission system provided in this embodiment are similar to those of the foregoing structural embodiment, and this embodiment is not repeated here.
In the several embodiments provided in the present application, it should be understood that the disclosed structure may be implemented in other manners. For example, the embodiments described above are merely illustrative, e.g., the division of modules is merely a logical function division, and there may be additional divisions of a practical implementation, e.g., multiple modules may be combined or integrated into another system, or some features may be omitted. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
Wherein the individual modules may be physically separated, e.g. mounted in different locations of one device, or mounted on different devices, or distributed over a plurality of network elements, or distributed over a plurality of processors. The modules may also be integrated together, e.g. mounted in the same device, or integrated in a set of codes. The modules may exist in hardware, or may also exist in software, or may also be implemented in software plus hardware. The application can select part or all of the modules according to actual needs to realize the purpose of the scheme of the embodiment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same. Although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments may be modified or some or all of the technical features may be replaced with equivalents. Such modifications and substitutions do not depart from the spirit of the application.
Claims (10)
1. An optical module with a roof-adjusting function, the optical module comprising: the device comprises a processing unit, a transmitting unit and a receiving unit;
the processing unit is used for generating a first top adjustment signal, the transmitting unit is used for transmitting the first top adjustment signal and a first main service signal to a next optical module, and the receiving unit is used for receiving a second main service signal from a previous optical module and a second top adjustment signal generated by the previous optical module;
the transmitting unit comprises a loading circuit, and the receiving unit comprises a sampling amplifying circuit;
the output end of the processing unit is connected with the input end of the loading circuit, and the input end of the processing unit is connected with the output end of the sampling amplifying circuit;
the loading circuit is used for loading the first top adjustment signal into the main service signal, so that the first top adjustment signal is transmitted along with the first main service signal;
the sampling amplifying circuit is used for extracting the second top-adjusting signal, filtering and amplifying the second top-adjusting signal to obtain a third top-adjusting signal, and transmitting the third top-adjusting signal to the processing unit.
2. The optical module with roof-switching function according to claim 1, wherein the transmitting unit further comprises: a laser driving chip and a laser array;
the output end of the laser driving chip is connected with the input end of the laser array, and the output end of the loading circuit is connected with the input end of the laser array;
the laser driving chip is used for transmitting the first main service signal and driving the laser array;
the laser array is used for converting the first main service signal and the first top modulation signal from an electric signal to an optical signal.
3. The optical module with the roof adjusting function according to claim 2, wherein the laser driving chip adopts a plurality of data transmission channels to transmit the main service signal;
the loading circuit is configured to load the first topping signal into the main service signal, and includes:
the loading circuit is used for loading the first topping signal into a main service signal transmitted by one data transmission channel in the plurality of data transmission channels.
4. The optical module with roof-switching function according to claim 3, wherein the transmitting unit further comprises a wavelength division multiplexer, and the receiving unit further comprises a wavelength division demultiplexer;
the input end of the wavelength division multiplexer is connected with the output end of the laser array, and the output end of the wavelength division multiplexer is connected with an optical fiber interface;
the input end of the wavelength division demultiplexer is connected with the optical fiber interface;
the wavelength division multiplexer is used for converting a plurality of main service signals in the plurality of data transmission channels into a main service signal;
the wavelength division demultiplexer is used for dividing one main service signal into a plurality of main service signals, so that the plurality of main service signals are transmitted through a plurality of data transmission channels, and one main service signal in the plurality of main service signals comprises the second roof-adjusting signal.
5. A light module with roof-switching function as recited in claim 3, wherein the first roof-switching signal or the second roof-switching signal has an amplitude of 3-5% of the main service signal.
6. The optical module with roof-switching function according to claim 3, wherein the frequency of the first roof-switching signal or the second roof-switching signal is 1KHz-1MHz.
7. The optical module with roof-switching function according to any one of claims 1-6, wherein the processing unit comprises: a signal generation module and an encoding module;
the output end of the signal generation module is connected with the input end of the coding module, and the output end of the coding module is connected with the input end of the loading circuit;
the signal generation module is used for generating the first roof adjusting signal;
the encoding module is used for encoding the first crest factor adjustment signal.
8. The optical module with roof-switching function of claim 7, wherein the processing unit further comprises: a signal recovery module and a decoding module;
the input end of the signal recovery module is connected with the output end of the sampling amplifying circuit, and the output end of the signal recovery module is connected with the input end of the decoding module;
the signal recovery module is used for recovering and regenerating the third top adjustment signal to obtain a fourth top adjustment signal;
the decoding module is used for decoding the fourth top adjustment signal to obtain the second top adjustment signal.
9. The optical module with roof-switching function of claim 8, wherein the processing unit further comprises: a data processing module;
the input end of the data processing module is connected with the output end of the decoding module, and the output end of the data processing module is connected with the input end of the encoding module.
10. A data transmission system, characterized in that the system comprises at least two optical modules with roof-switching functions according to any of claims 1-9.
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